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GCAP Industrial Ammonia Refrigeration Training non flashcards (Understanding Industrial refrigeration from the inside out) Questions & Answers!!$12.99
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Term 1 of 164
Which compressor is commonly started first in starting up a two stage system?
The high stage compressor
Low side - suction
Centrifugal force
Excessive energy used and compressor wear
Definition 2 of 164
Ammonia refrigerant flows through the tubes
In a shell and tube chiller, in a flooded system.
In a baffled shell and tube heat exchanger
Evaporative condensers
To check a leak in ammonia piping system typically you use
Term 3 of 164
Figure out the volume of this room. Length is 10 feet, width is 14 feet, and Height is 20 feet.
44 cubic feet
2,800 cubic feet
160 cubic feet
5,600 cubic feet
,Term 4 of 164
Compressors are sized based on what requirement?
Centrifugal force
Ppm requirement
The size of the high-pressure receiver.
CFM requirement
Term 5 of 164
What would be the % of gas produced if one pound of liquid Ammonia would convert to gas
across the expansion valve with 95° F Condensing temperature and -40° F evaporating
temperature? Flash/Tax gas = {(TD x 1.12) / 561}
Approximately 27%
Approximately 26%
Approximately 12%
Approximately 28%
Term 6 of 164
A compressor is considered a/an?
Volume reducer.
Pressure.
Gas only.
Gas and liquid combination.
,Term 7 of 164
PEL (Permissible Exposure Limits ) for Ammonia, set forth by the Federal OSHA, is how many
PPM?
10 PPM
50 PPM
300 PPM
1, 000 PPM
Term 8 of 164
A condenser converts the refrigerant from __________to___________ when it removes heat.
Gas to liquid
Liquid to solid
Solid to gas
To reduce heat transfer
Term 9 of 164
Where should you manually purge the noncondensibles from your system
From the condenser drain
From the side of the condenser, with the compressor cycling, and the condenser
pressurized
From the highest point of the condenser, with the compressor off, or the condenser isolated
From oil pots
, Term 10 of 164
Approximately how many BTU's does it take to convert 1 pound of saturated liquid Ammonia to 1
pound of saturated gas?
144 Btu's
561 BTU's
556 Btu's
970 Btu's
Term 11 of 164
What does the expansion device do
Execution flow
Data flow
Control flow
Block flow
Term 12 of 164
What pressure scale must be used to calculate a compression ratio?
WORK
PSIG
INCHES OF MERCURY
PSIA
Term 13 of 164
If Ammonia, in liquid form, makes its way in to the eyes There is usually damage that is non-
reversible resulting in blindness.
True
False
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